Genuine questions about our world may finally be answered if all goes according to plan. Using a fairly complex device called the Holometer or "holographic interferometer," scientists split a laser in two and beam them through a perpendicular path until they reach mirrors which bounce back and recombine with the beam splitter. By analyzing fluctuations or waves in the beams, researchers hope to find "holographic noise" which could probe the very nature of space-time itself.

By identifying these "jitters," we may be able to prove that our universe isn't 3D after all, similar to how a television implements its' 2D visuals to simulate the illusion of depth. Source: http://www.livescience.com/47600-universe-2d-hologram-holometer-experiment.html